Revert "Update all Angular libs (run update_all.sh)."

third_party/pkg/angular/lib/change_detection/linked_list.dart

 part of angular.watch_group;
 
 
 class _LinkedListItem<I extends _LinkedListItem> {
   I _previous, _next;
 }
 
-class _LinkedList<L extends _LinkedListItem> {
+class _LinkedList<L extends _LinkedList> {
   L _head, _tail;
 
   static _Handler _add(_Handler list, _LinkedListItem item) {
     assert(item._next     == null);
     assert(item._previous == null);
     if (list._tail == null) {
       list._head = list._tail = item;
     } else {
       item._previous = list._tail;
       list._tail._next = item;
@@ skipping 66 matching lines @@
     if (next == null)     list._watchTail = previous; else next._previousWatch = previous;
   }
 }
 
 abstract class _EvalWatchList {
   _EvalWatchRecord _evalWatchHead, _evalWatchTail;
   _EvalWatchRecord get _marker;
 
   static _EvalWatchRecord _add(_EvalWatchList list, _EvalWatchRecord item) {
     assert(item._nextEvalWatch     == null);
-    assert(item._prevEvalWatch == null);
+    assert(item._previousEvalWatch == null);
     var prev = list._evalWatchTail;
     var next = prev._nextEvalWatch;
 
     if (prev == list._marker) {
       list._evalWatchHead = list._evalWatchTail = item;
-      prev = prev._prevEvalWatch;
-      list._marker._prevEvalWatch = null;
-      list._marker._nextEvalWatch = null;
+      prev = prev._previousEvalWatch;
     }
     item._nextEvalWatch = next;
-    item._prevEvalWatch = prev;
+    item._previousEvalWatch = prev;
 
     if (prev != null) prev._nextEvalWatch = item;
-    if (next != null) next._prevEvalWatch = item;
+    if (next != null) next._previousEvalWatch = item;
 
     return list._evalWatchTail = item;
   }
 
   static bool _isEmpty(_EvalWatchList list) => list._evalWatchHead == null;
 
   static void _remove(_EvalWatchList list, _EvalWatchRecord item) {
     assert(item.watchGrp == list);
-    var prev = item._prevEvalWatch;
+    var prev = item._previousEvalWatch;
     var next = item._nextEvalWatch;
 
     if (list._evalWatchHead == list._evalWatchTail) {
       list._evalWatchHead = list._evalWatchTail = list._marker;
       list._marker
           .._nextEvalWatch = next
-          .._prevEvalWatch = prev;
+          .._previousEvalWatch = prev;
       if (prev != null) prev._nextEvalWatch = list._marker;
-      if (next != null) next._prevEvalWatch = list._marker;
+      if (next != null) next._previousEvalWatch = list._marker;
     } else {
       if (item == list._evalWatchHead) list._evalWatchHead = next;
       if (item == list._evalWatchTail) list._evalWatchTail = prev;
       if (prev != null) prev._nextEvalWatch = next;
-      if (next != null) next._prevEvalWatch = prev;
+      if (next != null) next._previousEvalWatch = prev;
     }
   }
 }
 
 class _WatchGroupList {
   WatchGroup _watchGroupHead, _watchGroupTail;
 
   static WatchGroup _add(_WatchGroupList list, WatchGroup item) {
     assert(item._nextWatchGroup     == null);
-    assert(item._prevWatchGroup == null);
+    assert(item._previousWatchGroup == null);
     if (list._watchGroupTail == null) {
       list._watchGroupHead = list._watchGroupTail = item;
     } else {
-      item._prevWatchGroup = list._watchGroupTail;
+      item._previousWatchGroup = list._watchGroupTail;
       list._watchGroupTail._nextWatchGroup = item;
       list._watchGroupTail = item;
     }
     return item;
   }
 
   static bool _isEmpty(_WatchGroupList list) => list._watchGroupHead == null;
 
   static void _remove(_WatchGroupList list, WatchGroup item) {
-    var previous = item._prevWatchGroup;
+    var previous = item._previousWatchGroup;
     var next = item._nextWatchGroup;
 
     if (previous == null) list._watchGroupHead = next;     else previous._nextWatchGroup = next;
-    if (next == null)     list._watchGroupTail = previous; else next._prevWatchGroup = previous;
+    if (next == null)     list._watchGroupTail = previous; else next._previousWatchGroup = previous;
   }
 }